32. (a) Using Eq. 20-54 for processD→AgivespDVγD=pAVγAp032(8V0)γ=p0Vγ0which leads to8γ=32 =⇒γ=53which (see§20-9 and§20-11) implies the gas is monatomic.(b) The input heat is that absorbed during processA→B:QH=nCp∆T=nµ52R¶TAµTBTA−1¶=nRTAµ52¶(2−1) =p0V0µ52¶and the exhaust heat is that liberated during processC→D:QL=nCp∆T=nµ52R¶TDµ1−TLTD¶=nRTDµ52¶(1−2) =
This is the end of the preview. Sign up
access the rest of the document.